The Demidov collection was a collection of artworks gathered by the Russian industrialist Count Nikolay Nikitich Demidov and considerably expanded by his second son Anatoly Nikolaievich Demidov, 1st Prince of San Donato. It was mainly on show at their Villa San Donato near Florence, in which a private museum of 14 rooms was devoted to them. It was dispersed at sales in Paris in 1863 on 21 February and 3 March 1870 and at the Villa in March 1880.